Feature #14313: Support creating KeyError with receiver and key from Ruby - Ruby master - Ruby Issue Tracking System

KeyError has readers for error details, receiver and key. They are convenient to process KeyError. We can set receiver and key to KeyError by rb_key_err_new() in C. But we can't set them in Ruby. Because receiver and key use no @ instance variables. How about adding KeyError#initialize that accepts receiver and key? Because KeyError is useful in pure Ruby libraries. For example, csv library uses K

[ksss9]

KeyError拡張されてたのか！